A signaling pathway that guides the early development of animals from flies to humans also helps a regenerating flatworm orient itself from head to tail.
José A. Rodriguez, estudiante doctoral financiado por el HHMI en la Universidad de California en Los Ángeles y un equipo multidisciplinario de colegas han encontrado que el parásito Trypanasoma brucei, que causa la enfermedad africana del sueño, no se mueve en sólo una dirección como un sacacorchos.
New research by an HHMI-funded graduate students and his colleagues has overturned an 150-year-old idea of how the parasite Trypanasoma brucei moves. T. brucei causes African sleeping sickness.
Por primera vez, científicos han diagnosticado una enfermedad genética secuenciando completamente todos los genes de un paciente.
For the first time, scientists have diagnosed a genetic disease by completely sequencing all of a patient’s genes.
New research shows how the taste of carbonation is perceived.
New research shows that a protein that stabilizes DNA does a lot of slipping and sliding as it wrestles the molecule into place.
Thomas A. Steitz, Venkatraman Ramakrishnan y Ada E. Yonath son los galardonados con el Premio Nobel de Química de 2009 por sus estudios sobre la estructura y función del ribosoma.
Thomas A. Steitz, Venkatraman Ramakrishnan, and Ada E. Yonath awarded the 2009 Nobel Prize in Chemistry for studies of the structure and function of the ribosome.
HHMI researcher Jack Szostak wins 2009 Nobel Prize in Physiology or Medicine.
La Real Academia de Ciencias Sueca anunció que Jack W. Szostak, Elizabeth Blackburn y Carol Greider fueron galardonados con el Premio Nobel 2009 de Fisiología o Medicina el descubrimiento de cómo los cromosomas son protegidos por los telómeros y la enzima telomerasa.
A study examining the letters of 16 well known writers, performers, politicians, and scientists shows that the factors that determined their correspondence patterns are the same factors that shape emailing patterns today.
In evolution, proteins can’t go home again—at least not by their original route.
A new method for rapidly identifying genes that are crucial for survival of bacteria cuts the time it takes to pinpoint promising new drug targets from years to weeks.
En el mundo de aminoácidos que en su mayoría es “izquierdo”, las versiones “derechas” de algunas de estas moléculas actúan como señales que pueden estimular la adaptación de las bacterias a cambios en las condiciones ambientales.
In the overwhelmingly left-handed world of amino acids, the right-handed versions of a few such molecules act as signals that spur bacteria to adapt to changing conditions.
HHMI investigators Brian Druker and Charles Sawyers will join Nicholas Lydon, formerly of Novartis, in receiving the 2009 Lasker~Debakey Clinical Medical Research Award.
A new genetically encoded switch lets researchers use light to control a cell’s shape and movement.
The sentinels of the immune system possess a hidden strength that may be used to improve vaccine design for tough-to-beat bugs.
The method Google uses to rank the importance of web pages can help identify the species whose extinction would most likely trigger an ecosystem’s collapse.
A new imaging technique will allow scientists to focus on the tiny structures that mediate communication between neurons within relatively intact samples of brain tissue.
Variations in the ways abnormal proteins fit together to form the long amyloid fibrils associated with many diseases may represent a protein-based system of inheritance that parallels the genetic code.
Researchers have identified two molecular keys that help release salts from cells, keeping them alive in the ever-changing salinity of their environment.
Researchers have learned how a molecular switch helps the immune system to keep cancer in check by promoting the destruction of abnormal blood cells.
Interfering with communication among bacteria can prevent them from mounting a unified assault on their host.
A new study shows that most early ovarian tumors exist for years at a size that is a thousand times smaller than existing tests can detect reliably.
Un nuevo estudio muestra que la mayoría de los tumores ováricos en estadios tempranos tienen, durante años, un tamaño que es mil veces más pequeño del que los análisis existentes pueden detectar con confiabilidad.
Tiny, hair-like projections called cilia sense bitter material in the airways and help expel it.
An HHMI-funded graduate student and her colleagues have found that some chimps infected with the primate form of HIV develop AIDS-like symptoms and die early.
New clues narrow the search for the underlying cause of a serious congenital heart defect.
Lung cancer cells hijack a master cellular signal and use it to seed deadly new tumors in the brain, bone marrow, and other organs.
New evidence suggests that damage to nerve cells in people with MS accumulates because the body's mechanism for repairing the nerve coating called myelin stalls out.
Researchers have identified two proteins that begin to explain how radically slashing calories leads to a longer life.
Joan Massagué honored for elucidating one of the fundamental processes that control cell division.
A new method will speed the identification of the targets of microRNAs—the tiny but powerful bits of nucleic acid that tweak gene expression to influence many aspects of health and human disease.
HHMI is expanding collaborations with the Jane Coffin Childs Memorial Fund, the Helen Hay Whitney Foundation, the Damon Runyon Cancer Research Foundation, and the Life Sciences Research Foundation to increase support for outstanding postdoctoral researchers.
New research shows that a father’s sperm passes along a previously unrecognized set of instructions that helps guide the early development of his children.
A new molecular portrait of rotavirus may help researchers design more effective vaccines against the lethal gastrointestinal infection that kills 500,000 children annually.
A new microscopy technique is enabling researchers to capture videos of fast-moving cellular processes with super high resolution.
New research indicates that in most cases, natural selection may shape the human genome much more slowly than previously thought.
HHMI researchers identify many potential new drug targets for cancers long deemed "untouchable."
Research suggests new avenues to treat or prevent infections by parasitic worms.
A protein often accused of sparking autoimmune disease can suppress the onset of inflammatory bowel disease.
HHMI scientists have taken a major step towards understanding the molecular mechanisms that transform Listeria monocytogenes from a harmless soil-dweller to a dangerous human pathogen by mapping the genes that Listeria expresses under different environmental conditions.
Horvitz's election to the Fellowship of the Royal Society recognizes his exceptional contributions to science.
Ultraviolet radiation from the sun can zap DNA, damage cells, and set the stage for the subsequent development of cancer. Scientists have now identified the built-in safety mechanism that forces some cells damaged by UV radiation to commit suicide so they do not perpetuate harmful mutations.
La radiación ultravioleta del sol puede destruir el ADN, dañar las células y predisponer al organismo para el desarrollo subsecuente de cáncer. Unos científicos han identificado el mecanismo de seguridad intrínseco que fuerza a algunas células dañadas por la radiación UV a cometer suicidio para no perpetuar mutaciones dañinas.
The movement of blood through the aorta of a developing embryo triggers the production of new blood stem cells.
Scientists have identified a protein that hampers learning and memory by keeping DNA inside neurons tightly coiled.
Genetic clues suggest how invasive breast cancer cells pry their way into the tightly protected interior of the brain.